"Make a horse nail?" Cao Liang fiddled with the object that Shi Bao had just sent over, and looked at it curiously.

In fact, Cao Liang had long heard of the name of Zhama Ding. In his previous life, he knew that Zhama Ding was invented by Zhuge Liang and was a weapon specially used to deal with war horses. However, he had never seen the real thing and only met today, so Cao Liang was very concerned about it.

The prickly nail is not big, each spike is about an inch, which means that the size of the prickly nail is about two inches. However, it presents a nearly perfect geometric shape. The angles of each spike are arranged very precisely, so that no matter how the prickly nail is placed, three spikes are always facing downwards and one spike is upwards, which is very exquisite.

Cao Liang really doubted that Zhuge Liang was not only a politician, military strategist, inventor, but also an outstanding mathematician. His application of geometry was so perfect. The design of the zama nail was so exquisite that it contained a deep understanding of geometry. Without a basic knowledge of mathematics, he would never have created such a thing.

In this era, Zhuge Liang was definitely a genius inventor, Zhuge's crossbow, wooden ox and flowing horse, horse nail, etc. These inventions all transcend this era, and only Ma Jun can compare with him.

Although Ma Jun was very talented, he was never valued in Wei throughout his life. Many of his inventions were only on the design drawings, and even until his death, many of the inventions were not converted into physical objects.

Zhuge Liang is different. He is the prime minister of Shu. The military and political affairs of Shu are determined by him alone. Therefore, Zhuge Liang's inventions and creations have no resistance. No matter how much manpower and material resources are spent, they can be realized.

However, Zhuge Liang was a pragmatic man, and all his inventions were for politics and military service. Zhuge Liang did not have the leisure to invent things like water and hundreds of plays for the emperor to enjoy. Whether it was a crossbow, a wooden ox and a horse or a horse nail, they were all tailor-made for the combat needs of the Shu army.

The crossbow is an attack weapon, and its powerful lethality can completely make up for the number of Shu army. The wooden ox and horse were invented to ensure the supply of food and grass for the Shu army. As for the horse nail, it is purely a defensive weapon.

The use of zama nails actually has relatively strict conditions. They can only be used during retreat, not during attack, only on narrow roads, not in open places.

The sting is made of cast iron. Although it is small, the amount of iron consumes is amazing as long as it is large. Moreover, once the sting is used, it cannot be reclaimed. Like a crossbow, it is a disposable consumable.

However, the effect of stabbing the enemy in the horse nail cannot be compared with the crossbow. The meaning of the stabbing the horse nail is just to stop the enemy. There are not many enemies that can be hurt.

Therefore, the horse nail can only be used on narrow roads, and it must be ensured that the enemy has no possibility of detours, and it must be used when the enemy is approaching. If it is released too early, it will be meaningless.

The horse-stapled weapon is indeed a magic weapon when retreating and escaping, and is most effective against fast cavalry. This invisibly also greatly reduces the advantages of the Wei army's cavalry.

Before the horse-drawn appeared, Cao Liang had not considered the way to deal with it. Now that the Shu army has already sacrificed this weapon, it proves that the Shu army will repeatedly use it in the next confrontation. If the Wei army does not have the way to deal with it, the situation of the war will become very passive.

After Zhuge Liang's death, when the Shu army retreated, they used horse-piercing nails. Although Sima Yi thought of a solution, that is, to tie wooden boards to the soles of the Wei soldiers and step on them all the way, so that the horse-piercing nails could be removed.

Although this method is effective, it is also time-consuming and laborious. After the Wei army cleared all the horse nails along the way, the Shu army had already fled and could not catch up.

Therefore, if you want to truly crack the horse nail, it is obviously not possible to step on the wooden board. The cleaning speed is too slow. After the Wei army cleaned up all the horse nails, the Shu army had long disappeared.

Therefore, the key to cleaning is speed. Only by clearing the horse-stabing nails sent by the Shu army at the fastest speed can the horse-stabing nails of the Shu army lose their blocking effect and bite the Shu army tightly.

But is there any good way to quickly clean up these horse-piercing nails? Cao Liang was also worried. The launch of horse-piercing nails is too simple. The Shu army just throws it away at will. If it is a little more complicated, it will just cover branches or fallen leaves on it. It is not difficult to operate, and it is both convenient and fast.

It was not easy for the Wei army to clean up these horse-piercing nails, especially those horse-piercing nails hidden under dead branches and leaves, which were difficult to find. It required the Wei army to search carefully. A lot of time was wasted on the search, and the Shu army would take this opportunity to escape.

In the Battle of Jingxi, the Tunqi Camp encountered such a situation. The Tunqi General Wang Hui took the lead and was first involved in the plot. Both men and horses were injured, which made the Tunqi Camp difficult. Originally, the Wei army had a great chance to annihilate the Wu army in this battle, but the sudden arrival of the Shu army made the battle situation confusing. The Shu army used the horse nail to successfully prevent the Tunqi Camp from chasing and allowed the Wu army to escape with ease.

If we do not find a way to solve the threat brought by the slaughter, then the Wei cavalry and Wu Shu army will face a great difficulty in fighting in the future. The advantage of the cavalry lies in speed. However, when facing the slaughter, the cavalry cannot raise the speed at all and cannot pursue the enemy. How can we fight this battle?

Cao Liang could not think of a good idea for a moment, so he could only walk to the side of the ship to get some air. At this time, the Lingyun battleship had left Wuchang and arrived in Baqiu. Cao Liang deliberately let the Lingyun sail into Dongting Lake and see the grand scenery of a green snail in the silver plate.

However, Cao Liang did not just come to visit the mountains and rivers. The war in Jingzhou was in full swing, and Dongting Lake was in the center of Jingzhou. Cao Liang parked the Lingyun on Dongting Lake, and even if he could get news of the war in time, he could make corresponding strategic adjustments.

Of course, as the emperor, although Cao Liang was far away from the capital, he was indispensable for the memorials he should deal with. No matter where he was, the memorials from all over the place were still delivered like snowflakes and were reviewed by him.

So Cao Liang simply asked his subordinates to bring in a few cases, and he sat on the deck of the ship to review the memorial. The first memorial he reviewed today happened to be a memorial from Ma Long, Liangzhou. When he saw Ma Long's name, Cao Liang suddenly remembered something, and he was lit up in front of him and said happily: "It's there!"
Chapter completed!